668265111 has 6 divisors (see below), whose sum is σ = 965271840. Its totient is φ = 445510068.

The previous prime is 668265079. The next prime is 668265119. The reversal of 668265111 is 111562866.

668265111 is a `hidden beast` number, since 66 + 82 + 6 + 511 + 1 = 666.

It is not a de Polignac number, because 668265111 - 2⁵ = 668265079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668265119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37125831 + ... + 37125848.

It is an arithmetic number, because the mean of its divisors is an integer number (160878640).

Almost surely, 2^668265111 is an apocalyptic number.

668265111 is a deficient number, since it is larger than the sum of its proper divisors (297006729).

668265111 is a wasteful number, since it uses less digits than its factorization.

668265111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74251685 (or 74251682 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 668265111 is about 25850.8241841532. The cubic root of 668265111 is about 874.2780923454.

The spelling of 668265111 in words is "six hundred sixty-eight million, two hundred sixty-five thousand, one hundred eleven".